- Correspondence to Erin S Rogers, Department of Population Health, New York University School of Medicine, 227 East 30th Street, NY 10016, USA;
- Received 6 September 2016
- Revised 21 February 2017
- Accepted 22 February 2017
- Published online 16 March 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.